Chillicothe weather in October

In October, Chillicothe sees average daytime highs of 66°F and overnight lows near 47°F, with 2.9 in of precipitation across 8.7 wet days and about 11 hours of daylight. It is the 6th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 71°F in the first days to 60°F by the end. The sky is clear or mostly clear about 39% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is Chillicothe's 3rd-clearest and 7th-windiest month. For the whole year in context, see Chillicothe's year-round climate.

Daytime high
66°
6th warmest
Overnight low
47°
7th coldest
Precipitation
2.9 in
8.7 wet days
Daylight
10 h 54 min
6:49 AM – 5:45 PM
Cloud cover
54%
3rd clearest
Wind
6 mph
7th windiest
Solar energy
3.3 kWh/m²
Travel score
6.1
out of 10

Chillicothe is city in and the county seat of Ross County, Ohio, United States.

Density
792/km²
people per km²
Founded
1803

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 71°F in the first days to 60°F by the end.

A typical October day in Chillicothe reaches about 66°F in the afternoon and slips back to 47°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 53°F and 78°F. Set against its neighbours, October runs about 12°F cooler than September and about 13°F warmer than November.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
17252
27252
37151
47151
57151
67050
77050
86949
96949
106849
116848
126748
136747
146747
156647
166546
176546
186546
196445
206445
216345
226344
236244
246244
256243
266143
276143
286042
296042
305942
315941

How October really feels in Chillicothe

Once humidity and wind are folded in, October averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Chillicothe weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan39° / 25°3.310.54.49.50.0
Feb42° / 27°3.19.6410.50.4
Mar52° / 35°4.111.2211.72.7
Apr64° / 45°4.312.40.4135.3
May73° / 55°4.513014.16.2
Jun81° / 64°4.012.2014.75.9
Jul85° / 67°3.712014.55.2
Aug84° / 65°2.99.9013.55.7
Sep78° / 58°3.08.2012.37.1
Oct66° / 47°2.98.70.1116.1
Nov53° / 37°3.19.20.79.83.1
Dec43° / 30°3.410.22.69.30.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25644
35644
45743
55644
65644
75644
85545
95446
105446
115446
125347
135347
145248
155149
165149
175149
185149
194951
204951
214852
224852
234753
244654
254654
264654
274555
284555
294555
304456
314456

Chance of precipitation in October

Any precipitation

Chillicothe gets around 2.9 in of rain and snow over 8.7 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 28% and peaks near 32% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
126
226
325
425
525
625
725
825
926
1026
1127
1227
1327
1428
1528
1628
1729
1829
1930
2030
2131
2231
2331
2431
2532
2632
2732
2832
2932
3031
3131

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 82% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16617125
26716125
36916114
47015114
57115104
67115104
7741493
8741493
9751483
10761383
11781372
12781372
13801262
14821251
15821251
16831151
17841141
18841141
19871030
20871030
2188930
2288930
2389920
2490820
2590820
2690820
2791720
2891720
2991720
3092710
3193610

Wind in October

Winds average 6 mph in October.

Across October, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 6:33 AM to 7:05 AM, and sunset from 6:09 PM to 5:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:336:09
211.56:346:07
311.56:356:05
411.56:366:04
511.46:376:02
611.46:386:01
711.36:395:59
811.36:405:57
911.26:415:56
1011.26:425:54
1111.26:435:53
1211.16:445:51
1311.16:455:50
1411.06:465:48
1511.06:475:47
1610.96:495:45
1710.96:505:44
1810.96:515:43
1910.86:525:41
2010.86:535:40
2110.76:545:38
2210.76:555:37
2310.76:565:36
2410.66:575:34
2510.66:585:33
2610.56:595:32
2710.57:015:31
2810.57:025:29
2910.47:035:28
3010.47:045:27
3110.37:055:26

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.3 kWh/m².

For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 6.18 kWh/m² in June across the year — October's 3.3 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
43.8Moderate
53.8Moderate
63.7Moderate
73.7Moderate
83.7Moderate
93.6Moderate
103.6Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.4Moderate
153.4Moderate
163.3Moderate
173.3Moderate
183.2Moderate
193.2Moderate
203.1Moderate
213.1Moderate
223.0Moderate
233.0Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.8Moderate
282.8Moderate
292.7Moderate
302.7Moderate
312.7Moderate
Planning a trip in October

Is October a good time to visit Chillicothe?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.1
Sightseeing
3rd-best month of the year
2.6
Beach & pool
6th-best month of the year

October is a reasonable time to visit Chillicothe for sightseeing.

What to pack for Chillicothe in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Chillicothe sees daytime highs around 66°F and nights near 47°F. Worth packing: rain gear. About 9 days see rain.

rain gear

UV index in Chillicothe in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chillicothe peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 19UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Chillicothe in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Chillicothe is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (October, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1218 µg/m³Oct 248 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr11Good
May14Moderate
Jun17Moderate
Jul18Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Chillicothe?

Chillicothe sits at 39.3°N, 83.0°W, 630 ft above sea level, in United States. The nearest listed city is Lancaster, 34 mi away.

Topography around Chillicothe

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Chillicothe.

Within 2 miles, the terrain around Chillicothe has only modest variations in elevation — a maximum elevation change of 469 ft around an average of 673 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 778 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 892 ft.

The land around Chillicothe is covered by trees (36%), grassland (28%) and artificial surfaces (25%) within 2 miles, trees (58%) and cropland (22%) within 10 miles, and trees (53%) and cropland (31%) within 50 miles.

2 miles
469 ft
10 miles
778 ft
50 miles
892 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Lancaster 34 mi · Grove City 39 mi · Pickerington 40 mi · Portsmouth 42 mi · Columbus 43 mi · Reynoldsburg 44 mi · Whitehall 44 mi · Upper Arlington 46 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Chillicothe (39.3331°, -82.9824°, elevation 630 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).